13 Feb
2006
13 Feb
'06
7:22 a.m.
On Sun, 12 Feb 2006 20:46:08 -0800 (PST)
"Kjetil S. Matheussen" <kjetil(a)ccrma.stanford.edu> wrote:
Das_Watchdog
============
ABOUT
-----
Das_Watchdog is a program heavily and shamefully inspired by the
rt_watchdog program made by Florian Schmidt:
http://tapas.affenbande.org/?page_id=38
Hehe, why shamefully? This is open source, baby. So i'm glad there's
some alternative to my messy code ;) And btw: the two programs are still
a bit different. rt_watchdog is a daemon. I have wondered about how to
make it known to the user that it has kicked in. The only solution i
found was to write into the logs. Opening an xwindow is an interesting
solution. Does linux maybe even have a standardized way for this kinda
stuff?
However, this one has some improvements:
1. It works with 2.4 kernels as well as 2.6. (well, at least I think it
works with 2.6...)
2. Instead of permanently setting all realtime processes to run
non-realtime, das_watchdog only sets them temporary.
3. When the watchdog kicks in, an X window should pop up that tells you
whats happening. (just close it after reading the message).
INSTALLING
----------
make
cp das_watchdog /usr/local/sbin/
echo '/usr/local/sbin/das_watchdog & >/dev/null' >>/etc/rc.local
This assumes an initscript style that's not used on all linux systems.
reboot
Also i wonder: Is it safe to simply use a static int as "event counter"?
Might this not fail on SMP boxes?
I think i make a similar mistake by using a volatile int (not as a
counter, just as a exit state indicator) instead. Any gurus care to
comment?
Flo
--
Palimm Palimm!
http://tapas.affenbande.org